These contoured lumbar supports have all the benefits of the regular lumbar supports with a contour shape to hug the back. All the lumbar supports include an adjustable strap for easy attachment to user s chair or car seat. Contoured lumbar supports have all the benefits of the regualar lumbar supports but offer a coutour shape to hug the back. Coutoured molded viscoelastic foam. Adjustable strap for chair or car.- SKU: JBR044